15-400kVA PXML Plus Series Modular UPS 15kVA and 20kVA module, 200/208/220VAC, 3:3 The PXML Plus series modular UPS provides the most compact footprint of less than 2m² with maximum capacity of 600KVA in parallel. With best reliability and high performance, industrial uninterruptible power supply has been leading the domestic market for years. The PXML Plus series is considered to be the best power protection solution for large data centers as well as for sensitive electronics.